The Blackhawk STRIKE Predator Hydration Backpacks provides 830 cubic inches of internal storage space and our patented STRIKE system for modular attachment of accessories. This hydration backpacks drink system protected by Microban antimicrobial technology and has a market proven bite valve and patent pending quick disconnect system. There is an additional compartment for optional 2nd reservoir. The Predator has a fully padded contour shoulder harness.